/**
 * Copyright 2012 Brigham Young University
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package edu.byu.nlp.pipes;

import java.util.List;

class SerialPipe<IL, ID, OL, OD> implements Pipe<IL, ID, OL, OD> {

	private final List<Pipe> pipes;
	
	public SerialPipe(List<Pipe> pipes) {
		this.pipes = pipes;
	}

	@Override
	public Iterable<Instance<OL, OD>> apply(Iterable<Instance<IL, ID>> instances) {
		Iterable it = instances;
		for (Pipe p : pipes) {
			it = p.apply(it);
		}
		return it;
	}
	
}